Governor for steam-pumps



(No Model.)

A. P. MASSEY. GOVERNOR FOR STEAM PUMPS.

No. 501,018. Patented July 4,1893.

'BOILEFK.

WITNESSES: I/VVE/VTOR UNITED STATES PATENT OFFICE.

ALBERT P. MASSEY, OF IVATERTOWN, NEW YORK.

GOVERNOR FOR STEAM-PUMPS.

SPECIFICATION forming part of Letters Patent No: 501,018, dated July 4,1893,

Application filed June 24, 1892. Serial No. 437,331- (No model.)

.To all whom it may concern:

Be it known that I, ALBERT P. MASSEY, a citizen of the United States,residing at Watertown, in the county of Jefierson and State of New York,have invented a new and useful Improvement in Governors for Steam-Pumps,of which the following, taken in connection with the accompanyingdrawing, is a specification.

The object of my invention is to produce a sensitive governor to controlthe admission of steam to a pump actuated by steam.

The drawing is a sectional view of the device.

In the drawing 1, 2, and 3 indicate the casing of the governor.

4: is a piston fitted to a cylinder.

5 is a steam valve which closes opening 6 when pressed down by thepiston 4:.

7 is the inlet for steam from the boiler.

8 is the outlet for steam to the pump.

9 is the connection from the receiving reservoir.

10 is a valve controlling the flow of fluidpressure from the receivingreservoir to the piston 4.

11 is a spring to open valve 10.

12 is a flexible corrugated diaphragm secured by its outer edge betweenparts 2 and 3 of the case.

13 is a spring for reinforcing the diaphragm for high pressure.

14 is an adjusting screw for the spring.

15 is a small orifice to keep the pump running slowly when 6 is closed.

The operation is as follows: The flexible corrugated diaphragm 12 ismade of such thickness and temper as to resist the opening of valve 10until a given pressure is accumulated in the receiving reservoir. Whenthe pressure in the receiving reservoir exceeds the resistance of thediaphragm, it is forced upward and spring 11 opens valve 10 this allowsfluid pressure to flow from the reservoir past valve 10 to the piston 4.which forces valve 5 down upon the opening 6 and shuts the reservoirfalls below the resistance of the diaphragm, the valve 10 is closed andthe steam pressure below valve 5 forces it upward and opens the passagefor steam to the pump. 1

As it is desirable to use different pressures in the reservoir atdifferent times and as one diaphragm can only serve for one certainpressure, a spring 13 is added with an adjusting screw 14 by means ofwhich the resistance of the diaphragm can be increased as much asdesired.

What Iclaim as new, and desire to secure by Letters Patent, is-

The combination of a Valve body having supply and delivery connections,a regulating valve controlling communication between said connections, acylindrical piston stem attached to said regulating-valve working in acylinder whereby steam may cause opening movement to saidregulating-valve, a piston unconnected with the regulating valve, butabutting against its stem and working in a chamber secured to thevalve-body, an exhaust port to release pressure from the space betweenthe regulating-valve-piston-stem and the piston unconnected with theregulatingvalve, an air-pressure valve controlling an air port betweenthe chambercontaining the piston and a chamber connected with an airsupply, a spring to open said air-pressure valve, a flexible corrugateddiaphragm exposed on one side to the pressure of the air supply, aspring on theopposite side of the flexible diaphragm connected with anadjusting screw, substantially as set forth.

In testimony whereof I have signed my name to this specification, in thepresence of two subscribing witnesses, on this 21st day of June, A.D1892.

ALBERT P. MASSEY.

Witnesses:

HENRY W. BOYER, MICHAEL J MORKIN.

